Main pelt color:

First letter of your first name. (choose which one best suits your cat's name)

A,B,C -  Light ginger, ginger or dark ginger.

D,E,F -  Light brown, brown, dark brown.

G,H,I - Light grey, grey, dark grey.

J,K,L - White, cream. 

M,N,O - Red, reddish brown.

P,Q,R - Black, blue-grey

S,T,U - Golden, golden brown.

V,W,X - Tortoiseshell, calico.

Y,Z - You choose.

Patterns:

First letter of your last name.

A,B,C - Tabby

D,E,F - Patches of white(or black)

G,H,I - Darker flecks

J,K,L - Lighter flecks.

M,N,O - White (or black) spots

P,Q,R - Plain

S,T,U - Swirl pattern

V,W,X - Torbie (search it up)

Y,Z -  You choose

Eye color:

Season you were born.

Summer - Amber

Autumn - Grey

Winter - Blue

Spring - Green

So far I am Mousewhisker, light brown with white spots and green eyes. And @Pen-how is Stormwing, Blue-grey tabby with green eyes.